A multiple-choice test has fivefive possible answers for each question. (a) If a

ID: 3264525 • Letter: A

Question

A multiple-choice test has

fivefive

possible answers for each question.

(a) If a student guesses at the answer, what is the probability that he or she selects the correct answer for one particular question?

(b)

If the student first eliminates

oneone

of the

fivefive

possible answers and guesses from the remaining possibilities, what is the probability that he or she selects the correct answer to that question?

(a) If a student guesses at the answer, the probability that he or she selects the correct answer for one particular question is

nothing.

(Type an integer or a simplified fraction.)

(b) If the student first eliminates

oneone

of the

fivefive

possible answers and guesses from the remaining possibilities, the probability that he or she selects the correct answer to that question is

nothing.

(Type an integer or a simplified fraction.)

a) Number of options = 5

Number of correct option = 1

Hence,

P(Correct answer) = 1/5

b) After eliminating one option,

Number of options = 4

Number of correct option = 1

Hence,

P(Correct answer) = 1/4

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